<script setup>
import { userUpdateAvatarService } from '@/api/userinfo'
// 基于store的数据，初始化imgUrl的初始值
import { useUserStore } from '@/stores'
import { Plus, Upload } from '@element-plus/icons-vue'
import { ref } from 'vue'

const userStore = useUserStore()
const imgUrl = ref(userStore.user.user_pic)
const uploadRef = ref()
function onSelectFile(uploadFile) {
  // 基于FileReader 读取图片做预览
  const fileReader = new FileReader()
  fileReader.onload = (e) => {
    imgUrl.value = e.target.result
    // console.log(imgUrl.value)
  }
  fileReader.readAsDataURL(uploadFile.raw)
}
async function onUpdateAvatar() {
  // 发送请求更新头像
  await userUpdateAvatarService(imgUrl.value)
  // userStore重新渲染
  userStore.getUser()
  // 提示用户更新成功
  // eslint-disable-next-line no-undef
  ElMessage.success('更新头像成功')
}
</script>

<template>
  <PageContainer title="更换头像">
    <el-upload
      ref="uploadRef"
      :auto-upload="false"
      class="avatar-uploader"
      :show-file-list="false"
      :on-change="onSelectFile"
    >
      <img v-if="imgUrl" :src="imgUrl" class="avatar">
      <el-icon v-else class="avatar-uploader-icon">
        <Plus />
      </el-icon>
    </el-upload>
    <br>
    <el-button type="primary" :icon="Plus" size="large" @click="uploadRef.$el.querySelector('input').click()">
      选择图片
    </el-button>
    <el-button type="success" :icon="Upload" size="large" @click="onUpdateAvatar">
      上传头像
    </el-button>
  </PageContainer>
</template>

<style lang="scss" scoped>
.avatar-uploader {
  :deep() {
    .avatar {
      display: block;
      width: 278px;
      height: 278px;
    }

    .el-upload {
      position: relative;
      overflow: hidden;
      cursor: pointer;
      border: 1px dashed var(--el-border-color);
      border-radius: 6px;
      transition: var(--el-transition-duration-fast);
    }

    .el-upload:hover {
      border-color: var(--el-color-primary);
    }

    .el-icon.avatar-uploader-icon {
      width: 278px;
      height: 278px;
      font-size: 28px;
      color: #8c939d;
      text-align: center;
    }
  }
}
</style>
